Kinetics of an Oscillating Reaction using Temperature-Controlled UV-Vis Spectroscopy

The Briggs-Rauscher reaction is one of the most captivating demonstrations that a chemist can perform. It is an oscillating reaction that cycles through multiple striking color changes for several minutes, providing a visual example of how chemicals transform in real time. The Briggs-Rauscher reaction involves colored intermediates, with kinetics influenced by temperature. Tracking these color changes is achievable using temperature-controlled UV-Vis spectroscopy. The Agilent Cary 3500 UV-Vis spectrophotometer was used to investigate this reaction at four different temperatures simultaneously. The system's fast data collection and accurate temperature control enabled efficient characterization of complex reaction kinetics

Presenter: Marc-Andre Gagnon